Hello and welcome to the forum.
You'll need to give us some more information. Perhaps you were successful when you connected internally on your LAN but not via the WAN?
Have a read of some of the other posts in the forum, for example, this one: http://nch.invisionzone.com/index.php?showtopic=12730
Let us know the local address you are using that work, and the address you are publishing to external listeners.
